EP 3453775 A1 20190313 - COBALT BASED ALLOY ADDITIVE MANUFACTURED ARTICLE AND METHOD FOR MANUFACTURING SAME

Title (en)

COBALT BASED ALLOY ADDITIVE MANUFACTURED ARTICLE AND METHOD FOR MANUFACTURING SAME

Title (de)

GENERATIV GEFERTIGTER ARTIKEL AUS KOBALTBASIERTER LEGIERUNG UND VERFAHREN ZUR HERSTELLUNG DAVON

Title (fr)

ARTICLE DE FABRICATION ADDITIVE D'ALLIAGE À BASE DE COBALT ET SON PROCÉDÉ DE FABRICATION

Publication

EP 3453775 A1 20190313 (EN)

Application

EP 18192365 A 20180904

Priority

JP 2017172999 A 20170908

Abstract (en)

There is provided an additive manufactured (AM) article formed of a Co based alloy having a composition comprising: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 30% or less in total of Fe and Ni, the Fe being 5% or less; 5-12% in total of W and/or Mo; 0.5-2% in total of Ti, Zr, Nb and Ta; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; and the balance being Co and impurities. The AM article comprises crystal grains with an average size of 10-100 µm. In the crystal grains, segregation cells with an average size of 0.15-1.5 µm are formed, in which components constituting an MC type carbide phase comprising the Ti, Zr, Nb and/or Ta are segregated in boundary regions of the cells, and/or grains of the MC type carbide phase are precipitated at an average intergrain distance of 0.15-1.5 µm.

IPC 8 full level

C22C 19/07 (2006.01); B22F 3/105 (2006.01); C22F 1/10 (2006.01); B22F 1/05 (2022.01)

CPC (source: CN EP KR RU US)

B22F 3/105 (2013.01 - RU); B22F 3/24 (2013.01 - US); B22F 10/28 (2021.01 - KR); B22F 10/36 (2021.01 - KR); B22F 10/64 (2021.01 - KR); B33Y 10/00 (2014.12 - CN KR); B33Y 50/02 (2014.12 - KR); B33Y 70/00 (2014.12 - CN EP RU US); B33Y 70/10 (2020.01 - KR); B33Y 80/00 (2014.12 - CN KR); C22C 1/0433 (2013.01 - KR); C22C 19/07 (2013.01 - CN EP KR RU US); C22C 30/00 (2013.01 - CN KR); C22F 1/10 (2013.01 - EP KR US); B22F 1/05 (2022.01 - CN EP RU US); B22F 5/04 (2013.01 - EP US); B22F 9/082 (2013.01 - EP); B22F 10/28 (2021.01 - CN EP RU US); B22F 10/36 (2021.01 - CN EP RU US); B22F 10/64 (2021.01 - CN EP RU US); B22F 2003/248 (2013.01 - EP KR US); B22F 2301/15 (2013.01 - KR US); B22F 2304/10 (2013.01 - KR US); B22F 2998/10 (2013.01 - CN EP KR RU US); B22F 2999/00 (2013.01 - CN EP KR RU US); B33Y 80/00 (2014.12 - EP US); C22C 1/0433 (2013.01 - EP US); C22C 1/10 (2013.01 - EP US); Y02P 10/25 (2015.11 - EP KR)

C-Set (source: CN EP RU US)

Citation (applicant)

JP S6124314 A 19860203 - TOSHIBA CORP
JP H07179967 A 19950718 - KUBOTA KK
JP 2016535169 A 20161110
WO 2015073081 A1 20150521 - UNIV PRINCETON [US], et al

Citation (search report)

[I] US 2016258298 A1 20160908 - CHANNEL TIMOTHY EDEN [US], et al
[AD] JP S61243143 A 19861029 - AGENCY IND SCIENCE TECHN
[A] US 2012279351 A1 20121108 - GU YUEFENG [JP], et al
[A] WO 9710368 A1 19970320 - HITACHI LTD [JP], et al

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3453775 A1 20190313; EP 3453775 B1 20200527; CN 109468495 A 20190315; CN 109468495 B 20210105; CN 112813308 A 20210518; CN 112813308 B 20220531; CN 112813309 A 20210518; CN 112813309 B 20220218; EP 3611281 A1 20200219; EP 3611282 A1 20200219; EP 3611282 B1 20231108; EP 3611282 C0 20231108; ES 2813964 T3 20210325; ES 2970440 T3 20240528; JP 2019049022 A 20190328; JP 6509290 B2 20190508; KR 102132656 B1 20200713; KR 102168845 B1 20201022; KR 102225271 B1 20210309; KR 20190028319 A 20190318; KR 20200084850 A 20200713; KR 20200121276 A 20201023; PL 3453775 T3 20201102; PL 3611282 T3 20240325; RU 2703670 C1 20191021; RU 2703670 C9 20191211; US 10632535 B2 20200428; US 10857595 B2 20201208; US 11325189 B2 20220510; US 2019076926 A1 20190314; US 2020016658 A1 20200116; US 2020016659 A1 20200116

DOCDB simple family (application)

EP 18192365 A 20180904; CN 201811040282 A 20180907; CN 202110002350 A 20180907; CN 202110003060 A 20180907; EP 19197441 A 20180904; EP 19197443 A 20180904; ES 18192365 T 20180904; ES 19197443 T 20180904; JP 2017172999 A 20170908; KR 20180105819 A 20180905; KR 20200081984 A 20200703; KR 20200133195 A 20201015; PL 18192365 T 20180904; PL 19197443 T 20180904; RU 2018132087 A 20180907; US 201816124978 A 20180907; US 201916582517 A 20190925; US 201916582732 A 20190925